CN104612962A - Variable-displacement piston oil delivery pump and variable-flow low-pressure oil supplying device - Google Patents
Variable-displacement piston oil delivery pump and variable-flow low-pressure oil supplying device Download PDFInfo
- Publication number
- CN104612962A CN104612962A CN201510048607.1A CN201510048607A CN104612962A CN 104612962 A CN104612962 A CN 104612962A CN 201510048607 A CN201510048607 A CN 201510048607A CN 104612962 A CN104612962 A CN 104612962A
- Authority
- CN
- China
- Prior art keywords
- oil
- variable
- lower cavity
- piston
- electromagnetic coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 15
- 239000000446 fuel Substances 0.000 claims abstract description 43
- 238000002347 injection Methods 0.000 claims abstract description 26
- 239000007924 injection Substances 0.000 claims abstract description 26
- 239000003921 oil Substances 0.000 claims description 39
- 239000002828 fuel tank Substances 0.000 claims description 19
- 239000000945 filler Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000000295 fuel oil Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003134 recirculating effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
- Details Of Reciprocating Pumps (AREA)
- Electromagnetic Pumps, Or The Like (AREA)
Abstract
The invention discloses a variable-displacement piston oil delivery pump and a variable-flow low-pressure oil supplying device. The piston oil delivery pump comprises a cylinder body and a piston, wherein the cylinder body is provided with an oil inlet and an oil outlet, the piston is composed of an upper cavity and a lower cavity, the upper cavity and the lower cavity are arranged together in a sleeving mode and are connected in a sliding mode, an electromagnetic coil is arranged in the lower cavity, a movable iron core in the electromagnetic coil is connected with the inner wall of the upper cavity, and a reset spring is arranged between the upper cavity and the lower cavity. The variable-flow low-pressure oil supplying device comprises an oil tank, an oil filter, an oil inlet valve, the piston oil delivery pump, an oil outlet valve, an oil feeding pressure sensor, a controller, an oil returning pressure sensor, a connecting rod and a crankshaft. According to the variable-displacement piston oil delivery pump and the variable-flow low-pressure oil supplying device, the displacement of the piston oil delivery pump can be adjusted in real time, the structure is simple, adjustment is convenient and reliable, and the oil supplying requirement of an engine fuel injection pump is fully met under various working condition.
Description
Technical field
The present invention relates to the oil supplying device of motor, be specifically related to variable-displacement piston type fuel supply pump and variable-flow low-pressure oil supply device.
Background technique
Fuel oil supply system is the heart of motor, and its performance directly has influence on combustion oil injection, the burning of atomization and motor and discharge.Along with energy shortage and environmental pollution are on the rise, also more and more higher to the requirement of engine fuel supply technology.The low-pressure oil supply device of conventional engines is generally made up of parts such as fuel tank, fuel filter and piston type fuel supply pumps, and piston type fuel supply pump is driven by fuel injection camshaft.When fuel injection camshaft rotates, fuel supply pump piston is reciprocating in the piston cavity of fuel supply pump housing.By the to-and-fro motion of fuel supply pump piston, the Seal cage volume realizing oil transfer pump inside increases and reduces, and by fuel from fuel tank sucking-off, overcomes the resistance of fuel filter, will have the fuel delivery injection pump of engine of certain pressure and flow.Due to the piston type fuel supply pump in conventional engines low-pressure oil supply device, its pump housing and piston structure are all changeless, namely traditional piston type fuel supply pump is metering pump, it is changeless that camshaft turns over one turn of fluid volume that can discharge, therefore at various speeds, the complex working conditions such as the high low-load of motor cannot be met to the demand of fuel delivery.
Through finding the retrieval of prior art document and patent, public announcement of a patent application CN 103629034 A, the low pressure oil transfer pump of patent name Injection Pump, this patented technology provides a kind of low pressure oil transfer pump comprising oil transfer pump outer ring, rotor, blade, cover of feed pump, make oil pump inner chamber have applicable pressure, ensure that fully oil-filled; But this blade oil transfer pump remains a kind of metering pump, oil transportation pump delivery cannot be changed in operation process.
License notification number CN 1811158 B, patent name variable discharge fuel pump, this patented technology provides a kind of variable-displacement high-pressure service pump, can be used to the pressurized fuel supply keeping multiple oil sprayer in common rail fuel combustion system; But the fuel pressure that the fuel pump that this patent relates to provides is higher, and fuel pump has the shell of formation first pump chamber and the second pump chamber in its design, also has the first plunger and the second plunger two plungers.This pump also comprises at least one driver, and this driver operationally engages with at least one in the first and second plungers, thus at least one making in the first plunger and the second plunger moves between the first and second end positions.Complex structure, manufactures difficulty, adds the manufacture cost of pump.
Summary of the invention
Technical problem to be solved by this invention: for above-mentioned the deficiencies in the prior art, the recirculating oil quantity of the Injection Pump that provides a kind of and design uniqueness, oil transportation pump delivery can be regulated in real time, reduces and improve fuel delivery efficiency.
Technological scheme of the present invention is: a kind of variable-displacement piston type fuel supply pump, comprise cylinder body and piston, described cylinder body is provided with filler opening and oil outlet, described piston is made up of upper chamber and lower cavity, the two is set in together and is slidably connected, be provided with electromagnetic coil in described lower cavity, the movable core in described electromagnetic coil is connected with the inwall of described upper chamber, is provided with Returnning spring between described upper chamber and the inner chamber of lower cavity.
The diameter of described upper chamber is greater than the diameter of described lower cavity, the end of described upper chamber is along the circumferential direction provided with at least two rolling steel balls, the outer cylinder surface corresponding position of described lower cavity is provided with straight-line groove, and described rolling steel balls is arranged in corresponding described straight-line groove and does upper and lower to-and-fro motion.
Described electromagnetic coil is connected with power supply and controller; The external cylindrical surface of described upper chamber coordinates with the internal surface slipper seal of described cylinder body.Described electromagnetic coil is positioned at the center of described lower cavity, and the quantity of described Returnning spring is two or more, and is uniformly distributed along the circumference in described electromagnetic coil surrounding.
A kind of variable-flow low-pressure oil supply device containing the oil transportation of variable-displacement piston type, also comprise fuel tank and Injection Pump, the filler opening of described cylinder body is communicated with described fuel tank by oiling valve, the oil outlet of described cylinder body is communicated with the filler opening of input pressure sensor with described Injection Pump by outlet valve, the fuel oil of certain pressure and flow is provided to described Injection Pump, the return opening of described Injection Pump is connected through the return opening of return pressure sensor with described fuel tank, the unnecessary fluid provided by described Injection Pump flows back to described fuel tank, the lower end of described lower cavity is connected with bent axle by connecting rod, described input pressure sensor, return pressure sensor are connected with controller respectively with electromagnetic coil.Filter cleaner is provided with between described fuel tank and oiling valve.
The invention has the beneficial effects as follows:
1, according to the pressure signal of input pressure sensor and return pressure sensor, the present invention judges that oil transfer pump discharge capacity needs increase still to reduce, and then the electric current of electromagnetic coil is adjusted by controller, thus in engine operation process, oil transportation pump delivery can be regulated in real time, under the high and low rotating speed operating mode taking into account motor and high running on the lower load, and reduce the recirculating oil quantity of Injection Pump, improve fuel delivery efficiency.
2, rolling steel balls of the present invention is arranged in corresponding straight-line groove and does upper and lower to-and-fro motion, and guidance quality is good, prevents from twisting at movement process middle and upper part cavity opposing lower portions cavity, reduces the damage of Returnning spring and movable core.
3, electromagnetic coil of the present invention is positioned at the center of lower cavity, and its surrounding is evenly equipped with Returnning spring, improves stressed uniformity, reduces the active force of upper chamber and inboard wall of cylinder block, extends the working life of cylinder body and upper chamber.
4, be provided with filter cleaner between fuel tank of the present invention and oiling valve, effectively can filter fluid, reduce the wearing and tearing to cylinder body and piston of impurity in fluid, reduce the infringement to motor especially.
5, structure of the present invention is simple, and regulating method is convenient and reliable, and fully meet the fuel feeding requirement of injection pump of engine under various operating mode, it is applied widely, has good economic benefit after popularization.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Embodiment: see in Fig. 1, figure, 1-fuel tank, 2-filter cleaner, 3-oiling valve, 4-piston type fuel supply pump, 5-outlet valve, 6-input pressure sensor, 7-Injection Pump, 8-controller, 9-return pressure sensor, 10-piston, 11-electromagnetic coil, 12-movable core, 13-Returnning spring, 14-connecting rod, 15-bent axle.In figure, arrow is depicted as fuel delivery direction, and dotted line is control wiring.
Variable-displacement piston type fuel supply pump 4 comprises cylinder body and piston 10, cylinder body is provided with filler opening and oil outlet, piston 10 is made up of upper chamber and lower cavity, the two is set in together and is slidably connected, electromagnetic coil 11 is provided with in lower cavity, movable core 12 in electromagnetic coil 11 is connected with the inwall of upper chamber, is provided with Returnning spring 13 between upper chamber and the inner chamber of lower cavity.
The diameter of upper chamber is greater than the diameter of lower cavity, the end of upper chamber is along the circumferential direction provided with at least two rolling steel balls, the outer cylinder surface corresponding position of lower cavity is provided with straight-line groove, and rolling steel balls is arranged in corresponding described straight-line groove and does upper and lower to-and-fro motion.
Electromagnetic coil 11 is connected with power supply and controller 8; The external cylindrical surface of upper chamber coordinates with the internal surface slipper seal of cylinder body.Electromagnetic coil 11 is positioned at the center of lower cavity, and the quantity of Returnning spring 13 is two or more, and is uniformly distributed along the circumference in electromagnetic coil 11 surrounding.
Variable-flow low-pressure oil supply device also comprises fuel tank 1 and Injection Pump 7, wherein: the filler opening of cylinder body is communicated with fuel tank 1 by oiling valve 3, the oil outlet of cylinder body is communicated with the filler opening of input pressure sensor 6 with Injection Pump 7 by outlet valve 5, the fuel oil of certain pressure and flow is provided to Injection Pump 7, the return opening of Injection Pump 7 is connected through the return opening of return pressure sensor 9 with fuel tank 1, the unnecessary fluid provided by Injection Pump 7 flows back to fuel tank 1, and the lower end of lower cavity is connected with bent axle 15 by connecting rod 14; Input pressure sensor 6, return pressure sensor 9 are connected with controller 8 respectively with electromagnetic coil 11.
As required, between fuel tank 1 and oiling valve 3, be provided with filter cleaner 2, the degree of purity of fluid can be ensured.
Operationally, controller 8 judges whether according to the pressure signal of input pressure sensor 6 and return pressure sensor 9 discharge capacity needing change piston type fuel supply pump 4, and calculate required electric current, control the size of electromagnetic coil 11 electromagnetic force, piston 10 can shrink or expand under the force action of the spring force of electromagnetic force and Returnning spring 13, make the maximum Seal cage volume (piston runs to volume during lowermost end) of cylinder interior during oil-feed become large or reduce, thus change oil drain quantity.
When bent axle 15 rotates, piston 10 is reciprocating in cylinder body.When needing the discharge capacity increasing piston type fuel supply pump 4, in the descending process of piston 10, electromagnetic coil 11 is energized, the effect that piston 10 overcomes Returnning spring 13 under the effect of electromagnetic force is shunk, maximum sealed volume in piston cavity is increased, degree of vacuum increases, and the oil mass of suction increases, and the discharge capacity of piston type fuel supply pump 4 becomes large.
When needing the discharge capacity reducing piston type fuel supply pump 4, in the descending process of piston 10, be reduced by the electric current of electromagnetic coil 11, electromagnetic force reduces, and under its spring force force action with Returnning spring 13, the contour projector of piston 10 reduces, maximum sealed volume in piston cavity is reduced, degree of vacuum reduces, and the oil mass of suction reduces, and the discharge capacity of piston type fuel supply pump 4 diminishes.
When needs return to piston type fuel supply pump 4 original discharge capacity, electromagnetic coil 11 power-off, electromagnetic force disappears, and piston 10 resets completely under the effect of Returnning spring 13, and the oil mass of suction returns to initial value, and the discharge capacity of piston type fuel supply pump 4 returns to original discharge capacity.
Above-mentioned three kinds of operating modes, in piston 10 up stroke, electromagnetic coil 11 all power-off, piston 10 resets completely, the oil mass of suction is all discharged.The present invention can in engine operation process the discharge capacity of real-time regulating piston formula oil transfer pump 4, take into account the high and low rotating speed operating mode of motor and high running on the lower load, and the recirculating oil quantity of Injection Pump 7 can be reduced, improve fuel delivery efficiency.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (6)
1. a variable-displacement piston type fuel supply pump, comprise cylinder body and piston, described cylinder body is provided with filler opening and oil outlet, it is characterized in that: described piston is made up of upper chamber and lower cavity, the two is set in together and is slidably connected, be provided with electromagnetic coil in described lower cavity, the movable core in described electromagnetic coil is connected with the inwall of described upper chamber, is provided with Returnning spring between described upper chamber and the inner chamber of lower cavity.
2. variable-displacement piston type fuel supply pump according to claim 1, it is characterized in that: the diameter of described upper chamber is greater than the diameter of described lower cavity, the end of described upper chamber is along the circumferential direction provided with at least two rolling steel balls, the outer cylinder surface corresponding position of described lower cavity is provided with straight-line groove, and described rolling steel balls is arranged in corresponding described straight-line groove and does upper and lower to-and-fro motion.
3. variable-displacement piston type fuel supply pump according to claim 1, is characterized in that: described electromagnetic coil is connected with power supply and controller; The external cylindrical surface of described upper chamber coordinates with the internal surface slipper seal of described cylinder body.
4. variable-displacement piston type fuel supply pump according to claim 1, is characterized in that: described electromagnetic coil is positioned at the center of described lower cavity, the quantity of described Returnning spring is two or more, and is uniformly distributed along the circumference in described electromagnetic coil surrounding.
5. the variable-flow low-pressure oil supply device containing variable-displacement piston type oil transportation described in any one of claim 1-4, also comprise fuel tank and Injection Pump, it is characterized in that: the filler opening of described cylinder body is communicated with described fuel tank by oiling valve, the oil outlet of described cylinder body is communicated with the filler opening of input pressure sensor with described Injection Pump by outlet valve, the fuel oil of certain pressure and flow is provided to described Injection Pump, the return opening of described Injection Pump is connected through the return opening of return pressure sensor with described fuel tank, the unnecessary fluid provided by described Injection Pump flows back to described fuel tank, the lower end of described lower cavity is connected with bent axle by connecting rod, described input pressure sensor, return pressure sensor are connected with controller respectively with electromagnetic coil.
6. variable-flow low-pressure oil supply device according to claim 5, is characterized in that: be provided with filter cleaner between described fuel tank and oiling valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510048607.1A CN104612962B (en) | 2015-01-30 | 2015-01-30 | Variable-displacement piston oil delivery pump and variable-flow low-pressure oil supplying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510048607.1A CN104612962B (en) | 2015-01-30 | 2015-01-30 | Variable-displacement piston oil delivery pump and variable-flow low-pressure oil supplying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104612962A true CN104612962A (en) | 2015-05-13 |
| CN104612962B CN104612962B (en) | 2017-01-25 |
Family
ID=53147565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510048607.1A Active CN104612962B (en) | 2015-01-30 | 2015-01-30 | Variable-displacement piston oil delivery pump and variable-flow low-pressure oil supplying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104612962B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464868A (en) * | 2016-01-08 | 2016-04-06 | 郑州航空工业管理学院 | Variable flow fuel supply system capable of automatically switching fuel supply gears and fuel return energy storage |
| CN108843473A (en) * | 2018-07-09 | 2018-11-20 | 郑州航空工业管理学院 | More check valve combinations are adaptive mutually to open the reciprocal fueller of energy conservation in advance |
| CN109083762A (en) * | 2018-08-28 | 2018-12-25 | 广东工业大学 | A kind of engine and its piston apparatus |
| CN109595090A (en) * | 2018-12-14 | 2019-04-09 | 重庆军通汽车有限责任公司 | Control system based on smoke generator |
| CN112604875A (en) * | 2020-12-11 | 2021-04-06 | 浙江旅游职业学院 | Food production is with even spraying device that has temperature control effect |
| CN114137343A (en) * | 2021-11-24 | 2022-03-04 | 中船动力研究院有限公司 | Device, method, equipment and medium for detecting dynamic performance of electromagnetic valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1219645A (en) * | 1998-12-23 | 1999-06-16 | 钟克雄 | Piston type compressor |
| CN101688530A (en) * | 2007-05-11 | 2010-03-31 | 普拉德研究及开发股份有限公司 | Positive displacement pump comprising an externally assisted valve |
| CN202493365U (en) * | 2012-04-09 | 2012-10-17 | 十堰市倍力汽车零部件有限公司 | Fuel oil delivery pump |
| CN204436778U (en) * | 2015-01-30 | 2015-07-01 | 郑州航空工业管理学院 | Variable-displacement piston type fuel supply pump and variable-flow low-pressure oil supply device |
-
2015
- 2015-01-30 CN CN201510048607.1A patent/CN104612962B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1219645A (en) * | 1998-12-23 | 1999-06-16 | 钟克雄 | Piston type compressor |
| CN101688530A (en) * | 2007-05-11 | 2010-03-31 | 普拉德研究及开发股份有限公司 | Positive displacement pump comprising an externally assisted valve |
| CN202493365U (en) * | 2012-04-09 | 2012-10-17 | 十堰市倍力汽车零部件有限公司 | Fuel oil delivery pump |
| CN204436778U (en) * | 2015-01-30 | 2015-07-01 | 郑州航空工业管理学院 | Variable-displacement piston type fuel supply pump and variable-flow low-pressure oil supply device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464868A (en) * | 2016-01-08 | 2016-04-06 | 郑州航空工业管理学院 | Variable flow fuel supply system capable of automatically switching fuel supply gears and fuel return energy storage |
| CN105464868B (en) * | 2016-01-08 | 2018-01-05 | 郑州航空工业管理学院 | Can be automatically switched the variable-flow oil supply system of fuel feeding gear and oil return energy storage |
| CN108843473A (en) * | 2018-07-09 | 2018-11-20 | 郑州航空工业管理学院 | More check valve combinations are adaptive mutually to open the reciprocal fueller of energy conservation in advance |
| CN109083762A (en) * | 2018-08-28 | 2018-12-25 | 广东工业大学 | A kind of engine and its piston apparatus |
| CN109083762B (en) * | 2018-08-28 | 2020-11-13 | 广东工业大学 | Engine and piston device thereof |
| CN109595090A (en) * | 2018-12-14 | 2019-04-09 | 重庆军通汽车有限责任公司 | Control system based on smoke generator |
| CN109595090B (en) * | 2018-12-14 | 2021-10-29 | 重庆军通汽车有限责任公司 | Control system based on smoke generator |
| CN112604875A (en) * | 2020-12-11 | 2021-04-06 | 浙江旅游职业学院 | Food production is with even spraying device that has temperature control effect |
| CN114137343A (en) * | 2021-11-24 | 2022-03-04 | 中船动力研究院有限公司 | Device, method, equipment and medium for detecting dynamic performance of electromagnetic valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104612962B (en) | 2017-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104612962A (en) | Variable-displacement piston oil delivery pump and variable-flow low-pressure oil supplying device | |
| CN103089507B (en) | Double-row six-cylinder radial type common-rail oil feed pump | |
| CN104791211B (en) | Electromagnetic type variable cam mechanism and little pulsation variable-flow fueller | |
| CN102953883A (en) | Energy-storage type high-pressure electronic fuel pump, fuel supply device and application method thereof | |
| US6021761A (en) | High-pressure pump for fuel delivery in fuel injection systems of internal combustion engines | |
| CN105464868A (en) | Variable flow fuel supply system capable of automatically switching fuel supply gears and fuel return energy storage | |
| CN100494664C (en) | Accumulator distribution type fuel injection pump | |
| CN207004702U (en) | Combined type electric-controlled co-rail high-pressure oil pump | |
| CN204436778U (en) | Variable-displacement piston type fuel supply pump and variable-flow low-pressure oil supply device | |
| CN104061099A (en) | Energy-saving engine fuel injection pump plunger | |
| CN204591609U (en) | Electromagnetic type variable cam mechanism and little pulsation variable-flow oil supplying device | |
| CN102828874B (en) | Solenoid valve and high-pressure pump having same | |
| US20060193736A1 (en) | Fuel injection device for an internal combustion engine | |
| CN203962260U (en) | Energy-saving injection pump of engine plunger | |
| CN202691550U (en) | Mechanical type temperature control variable lubricating oil pump | |
| CN202811141U (en) | Energy storage type high pressure electronic fuel pump | |
| CN101387276B (en) | Axial plunger type high voltage common rail pump | |
| CN201747496U (en) | Electric control high pressure oil injecting pump for single-cylinder diesel engine | |
| CN107575327A (en) | A kind of electric control single pump engine and its control method | |
| CN205089511U (en) | Take effluent oil recovery's injection pump | |
| CN201377371Y (en) | Electromagnetic gasoline pump | |
| CN203962261U (en) | A kind of diesel injection pump | |
| CN201269178Y (en) | Axial plunger type high-tension co-rail pump | |
| CN203783784U (en) | Oil outlet valve with variable oil injection rate | |
| CN1049953C (en) | Hydraulic booster and speed-increasing short time fuel injection piston pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |